E46 N42 Vacume Pump

[zippy320]

Hi guys , My cars an E46 318i N42 engine Automatic

So I had my valve stem seals replaced this week , Got the car back yesterday , No more smoke , engine seems smoother and quieter , though they did find two oil leaks ,

They tell me that the Vacume pump is leaking , and the Sump gasket has a slight leak , But other then that there are no other leaks .

Regarding the vacuum pump , they tell me that the place where the hose attaches to the pump (metal pipe that goes into the pump ) at the top is loose , The seals are fine but that part is loose and that's whats causing my oil leak.

I haven't checked the car yet myself , takes time for me to strip up all the little bits .

Is this possible ? can that piece be loose and could it break? I assumed it was part of the Pumps body. Can it be tightened or is my only option a replacement pump?

I have replaced the seals on this pump a few years before , Didnt take notice though of the metal hose area. Seemed pretty solid to me.

The brakes are not hard or anything of that sort , they work fine at the moment . It just leaks .

All , any advice would be greatly appreciated.

 

[zippy320]

So not knowing where to start , and no reply's to my post , I decided to go ahead and buy another vacume pump ,

I purchased a second hand one from a scrap yard , It seemed in good condition ,(new one was over R5000 , this was only about R200 , I was quoted R2500 from other yards , some wanted R1000 , others R1500 ) At that price it was worth a try, I also purchased new rings for it , And decided to rebuild this pump and attach it to the car.

In comparison to my original pump , the new ones (nozzle where the brake hose goes into ) did not spin , I also noticed that it has some sort of one way valve built into it . If you blow into it , it would allow air to go through but if you try and suck air through, it would stop.

Anyway , Rebuilt the pump,while cleaning it up as best I could with its new rubber seals and fitted it to the car , Will see in the morning how it turns out . Not a very complicated job , The bolts attaching this pump to the head were a little difficult getting to .

If anyone trys this , don't drop anything behind the engine!, Its can be annoyingly difficult to pick up screws bolts and screw drivers when they fall down and rest upon the sump guard.

 

[cOlDFuSiOn]

You are asking difficult questions here.. :hammerhead: hence we are all too quiet to reply.

Looks like a good job you did here, good luck let's see what she does :coolShake:

 

[zippy320]

Hehe , Sorry

You are asking difficult questions here.. :hammerhead: hence we are all too quiet to reply.

Looks like a good job you did here, good luck let's see what she does :coolShake:

 

[Chucky]

What were the results of the rebuilt pump?

 

[zippy320]

What were the results of the rebuilt pump?

Im quite pleased with the results, car seems smoother , brakes feel much better and a lot more responsive( not as hard) even though I thought they were not hard,, idle has improved as well. And for some reason , it seems to have a little more power when accelerating . Not sure how that works.

That kit BMW sells is well worth the R100 cost. lol , much better then having to pay thousands for a new pump.

 

[Chucky]

:clapper:

Not surprised at what you are saying.

 

[Charlie Brown]

Good job, I have a mate with a similar engine and whilst I was doing his VCG for him, we had a look at replacing this seal. On the E90 it so tight against the firewall I eventually decided against doing it. Added to this he's also going to have to do his valve stem seals, so that would be the right time to this seal - well that's what I told myself !